$\lambda$ का वह मान जिसके लिए $\int \frac{4x^3 + \lambda 4^x}{4^x + x^4} \, dx = \log (4^x + x^4) + c$ है,वह है:

  • A
    $1$
  • B
    $\ln 4$
  • C
    $\log_4 e$
  • D
    $4$

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निरीक्षण विधि द्वारा फलन $e^{2x}$ का प्रति-अवकलज (या समाकल) ज्ञात कीजिए।

$\int \left( \frac{1}{x^2} + \frac{\sin^3 x + \cos^3 x}{\sin^2 x \cos^2 x} \right) dx =$

$\int \frac{x \, dx}{x^2 + 4x + 5} = $

यदि $x > 0$ और $x \neq (2n+1) \frac{\pi}{2}$ है, तो $\int \left(x \sqrt{x} - e^{\log(\sec x \tan x)} + \frac{3x^2 - 2x + 1}{x^2}\right) dx =$

यदि $\int f'(x) \cdot e^{x^2} dx = (x - 1) \cdot e^{x^2} + k$ है, जहाँ $k$ समाकलन स्थिरांक है, तो $f(x) = \dots$

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